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tcp: Don't prematurely drop receiving-only connections.
[dragonfly.git] / sys / vfs / hpfs / hpfs_vnops.c
blob364b7b1505adfeb1f3f7baafba52b7fb89abbcbd
1 /*-
2 * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/fs/hpfs/hpfs_vnops.c,v 1.2.2.2 2002/01/15 18:35:09 semenu Exp $
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/proc.h>
33 #include <sys/priv.h>
34 #include <sys/time.h>
35 #include <sys/types.h>
36 #include <sys/stat.h>
37 #include <sys/vnode.h>
38 #include <sys/mount.h>
39 #include <sys/namei.h>
40 #include <sys/malloc.h>
41 #include <sys/buf.h>
42 #include <sys/dirent.h>
43
44 #include <machine/limits.h>
45
46 #include <vm/vm.h>
47 #include <vm/vm_param.h>
48 #if !defined(__DragonFly__)
49 #include <vm/vm_prot.h>
50 #endif
51 #include <vm/vm_page.h>
52 #include <vm/vm_object.h>
53 #include <vm/vm_pager.h>
54 #include <vm/vm_zone.h>
55 #if defined(__DragonFly__)
56 #include <vm/vnode_pager.h>
57 #endif
58 #include <vm/vm_extern.h>
59
60 #include <sys/buf2.h>
61
62 #if !defined(__DragonFly__)
63 #include <miscfs/specfs/specdev.h>
64 #include <miscfs/genfs/genfs.h>
65 #endif
66
67 #include <sys/unistd.h> /* for pathconf(2) constants */
68
69 #include "hpfs.h"
70 #include "hpfsmount.h"
71 #include "hpfs_subr.h"
72 #include "hpfs_ioctl.h"
73
74 static int hpfs_de_uiomove (int *, struct hpfsmount *,
75 struct hpfsdirent *, struct uio *);
76 static int hpfs_ioctl (struct vop_ioctl_args *ap);
77 static int hpfs_read (struct vop_read_args *);
78 static int hpfs_write (struct vop_write_args *ap);
79 static int hpfs_getattr (struct vop_getattr_args *ap);
80 static int hpfs_setattr (struct vop_setattr_args *ap);
81 static int hpfs_inactive (struct vop_inactive_args *ap);
82 static int hpfs_print (struct vop_print_args *ap);
83 static int hpfs_reclaim (struct vop_reclaim_args *ap);
84 static int hpfs_strategy (struct vop_strategy_args *ap);
85 static int hpfs_access (struct vop_access_args *ap);
86 static int hpfs_readdir (struct vop_readdir_args *ap);
87 static int hpfs_lookup (struct vop_old_lookup_args *ap);
88 static int hpfs_create (struct vop_old_create_args *);
89 static int hpfs_remove (struct vop_old_remove_args *);
90 static int hpfs_bmap (struct vop_bmap_args *ap);
91 #if defined(__DragonFly__)
92 static int hpfs_fsync (struct vop_fsync_args *ap);
93 #endif
94 static int hpfs_pathconf (struct vop_pathconf_args *ap);
95
96 #if defined(__DragonFly__)
97
98 /*
99 * hpfs_fsync(struct vnode *a_vp, int a_waitfor)
100 */
101 static int
102 hpfs_fsync(struct vop_fsync_args *ap)
103 {
104 struct vnode *vp = ap->a_vp;
105
106 /*
107 * Flush all dirty buffers associated with a vnode.
108 */
109 #ifdef DIAGNOSTIC
110 loop:
111 #endif
112 vfsync(vp, ap->a_waitfor, 0, NULL, NULL);
113 #ifdef DIAGNOSTIC
114 if (ap->a_waitfor == MNT_WAIT && !RB_EMPTY(&vp->v_rbdirty_tree)) {
115 vprint("hpfs_fsync: dirty", vp);
116 goto loop;
117 }
118 #endif
119
120 /*
121 * Write out the on-disc version of the vnode.
122 */
123 return hpfs_update(VTOHP(vp));
124 }
125
126 #endif
127
128 /*
129 * hpfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data,
130 * int a_fflag, struct ucred *a_cred)
131 */
132 static int
133 hpfs_ioctl(struct vop_ioctl_args *ap)
134 {
135 struct vnode *vp = ap->a_vp;
136 struct hpfsnode *hp = VTOHP(vp);
137 int error;
138
139 kprintf("hpfs_ioctl(0x%x, 0x%lx, 0x%p, 0x%x): ",
140 hp->h_no, ap->a_command, ap->a_data, ap->a_fflag);
141
142 switch (ap->a_command) {
143 case HPFSIOCGEANUM: {
144 u_long eanum;
145 u_long passed;
146 struct ea *eap;
147
148 eanum = 0;
149
150 if (hp->h_fn.fn_ealen > 0) {
151 eap = (struct ea *)&(hp->h_fn.fn_int);
152 passed = 0;
153
154 while (passed < hp->h_fn.fn_ealen) {
155
156 kprintf("EAname: %s\n", EA_NAME(eap));
157
158 eanum++;
159 passed += sizeof(struct ea) +
160 eap->ea_namelen + 1 + eap->ea_vallen;
161 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int +
162 passed);
163 }
164 error = 0;
165 } else {
166 error = ENOENT;
167 }
168
169 kprintf("%lu eas\n", eanum);
170
171 *(u_long *)ap->a_data = eanum;
172
173 break;
174 }
175 case HPFSIOCGEASZ: {
176 u_long eanum;
177 u_long passed;
178 struct ea *eap;
179
180 kprintf("EA%ld\n", *(u_long *)ap->a_data);
181
182 eanum = 0;
183 if (hp->h_fn.fn_ealen > 0) {
184 eap = (struct ea *)&(hp->h_fn.fn_int);
185 passed = 0;
186
187 error = ENOENT;
188 while (passed < hp->h_fn.fn_ealen) {
189 kprintf("EAname: %s\n", EA_NAME(eap));
190
191 if (eanum == *(u_long *)ap->a_data) {
192 *(u_long *)ap->a_data =
193 eap->ea_namelen + 1 +
194 eap->ea_vallen;
195
196 error = 0;
197 break;
198 }
199
200 eanum++;
201 passed += sizeof(struct ea) +
202 eap->ea_namelen + 1 + eap->ea_vallen;
203 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int +
204 passed);
205 }
206 } else {
207 error = ENOENT;
208 }
209
210 break;
211 }
212 case HPFSIOCRDEA: {
213 u_long eanum;
214 u_long passed;
215 struct hpfs_rdea *rdeap;
216 struct ea *eap;
217
218 rdeap = (struct hpfs_rdea *)ap->a_data;
219 kprintf("EA%ld\n", rdeap->ea_no);
220
221 eanum = 0;
222 if (hp->h_fn.fn_ealen > 0) {
223 eap = (struct ea *)&(hp->h_fn.fn_int);
224 passed = 0;
225
226 error = ENOENT;
227 while (passed < hp->h_fn.fn_ealen) {
228 kprintf("EAname: %s\n", EA_NAME(eap));
229
230 if (eanum == rdeap->ea_no) {
231 rdeap->ea_sz = eap->ea_namelen + 1 +
232 eap->ea_vallen;
233 copyout(EA_NAME(eap),rdeap->ea_data,
234 rdeap->ea_sz);
235 error = 0;
236 break;
237 }
238
239 eanum++;
240 passed += sizeof(struct ea) +
241 eap->ea_namelen + 1 + eap->ea_vallen;
242 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int +
243 passed);
244 }
245 } else {
246 error = ENOENT;
247 }
248
249 break;
250 }
251 default:
252 error = EOPNOTSUPP;
253 break;
254 }
255 return (error);
256 }
257
258 /*
259 * Map file offset to disk offset.
260 *
261 * hpfs_bmap(struct vnode *a_vp, off_t a_loffset,
262 * off_t *a_doffsetp, int *a_runp, int *a_runb)
263 */
264 int
265 hpfs_bmap(struct vop_bmap_args *ap)
266 {
267 struct hpfsnode *hp = VTOHP(ap->a_vp);
268 int error;
269 daddr_t lbn;
270 daddr_t dbn;
271
272 if (ap->a_runb != NULL)
273 *ap->a_runb = 0;
274 if (ap->a_doffsetp == NULL)
275 return (0);
276
277 dprintf(("hpfs_bmap(0x%x): ", hp->h_no));
278
279 lbn = ap->a_loffset >> DEV_BSHIFT;
280 KKASSERT(((int)ap->a_loffset & DEV_BMASK) == 0);
281
282 error = hpfs_hpbmap (hp, lbn, &dbn, ap->a_runp);
283 if (error || dbn == (daddr_t)-1) {
284 *ap->a_doffsetp = NOOFFSET;
285 } else {
286 *ap->a_doffsetp = (off_t)dbn << DEV_BSHIFT;
287 }
288 return (error);
289 }
290
291 /*
292 * hpfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
293 * struct ucred *a_cred)
294 */
295 static int
296 hpfs_read(struct vop_read_args *ap)
297 {
298 struct vnode *vp = ap->a_vp;
299 struct hpfsnode *hp = VTOHP(vp);
300 struct uio *uio = ap->a_uio;
301 struct buf *bp;
302 u_int xfersz, toread;
303 u_int off;
304 daddr_t lbn, bn;
305 int resid;
306 int runl;
307 int error = 0;
308
309 resid = (int)szmin(uio->uio_resid, hp->h_fn.fn_size - uio->uio_offset);
310
311 dprintf(("hpfs_read(0x%x, off: %d resid: %zx, segflg: %d): "
312 "[resid: 0x%x]\n",
313 hp->h_no, (u_int32_t)uio->uio_offset,
314 uio->uio_resid, uio->uio_segflg, resid));
315
316 while (resid) {
317 lbn = uio->uio_offset >> DEV_BSHIFT;
318 off = uio->uio_offset & (DEV_BSIZE - 1);
319 dprintf(("hpfs_read: resid: 0x%zx lbn: 0x%x off: 0x%x\n",
320 uio->uio_resid, lbn, off));
321 error = hpfs_hpbmap(hp, lbn, &bn, &runl);
322 if (error)
323 return (error);
324
325 toread = min(off + resid, min(64*1024, (runl+1)*DEV_BSIZE));
326 xfersz = roundup2(toread, DEV_BSIZE);
327 dprintf(("hpfs_read: bn: 0x%x (0x%x) toread: 0x%x (0x%x)\n",
328 bn, runl, toread, xfersz));
329
330 if (toread == 0)
331 break;
332
333 error = bread(hp->h_devvp, dbtodoff(bn), xfersz, &bp);
334 if (error) {
335 brelse(bp);
336 break;
337 }
338
339 error = uiomove(bp->b_data + off, (size_t)(toread - off), uio);
340 if(error) {
341 brelse(bp);
342 break;
343 }
344 brelse(bp);
345 resid -= toread;
346 }
347 dprintf(("hpfs_read: successful\n"));
348 return (error);
349 }
350
351 /*
352 * hpfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
353 * struct ucred *a_cred)
354 */
355 static int
356 hpfs_write(struct vop_write_args *ap)
357 {
358 struct vnode *vp = ap->a_vp;
359 struct hpfsnode *hp = VTOHP(vp);
360 struct uio *uio = ap->a_uio;
361 struct buf *bp;
362 u_int xfersz, towrite;
363 u_int off;
364 daddr_t lbn, bn;
365 int runl;
366 int error = 0;
367
368 dprintf(("hpfs_write(0x%x, off: %d resid: %zd, segflg: %d):\n",
369 hp->h_no, (u_int32_t)uio->uio_offset,
370 uio->uio_resid, uio->uio_segflg));
371
372 if (ap->a_ioflag & IO_APPEND) {
373 dprintf(("hpfs_write: APPEND mode\n"));
374 uio->uio_offset = hp->h_fn.fn_size;
375 }
376 if (uio->uio_offset + uio->uio_resid > hp->h_fn.fn_size) {
377 error = hpfs_extend (hp, uio->uio_offset + uio->uio_resid);
378 if (error) {
379 kprintf("hpfs_write: hpfs_extend FAILED %d\n", error);
380 return (error);
381 }
382 }
383
384 while (uio->uio_resid) {
385 lbn = uio->uio_offset >> DEV_BSHIFT;
386 off = uio->uio_offset & (DEV_BSIZE - 1);
387 dprintf(("hpfs_write: resid: 0x%zx lbn: 0x%x off: 0x%x\n",
388 uio->uio_resid, lbn, off));
389 error = hpfs_hpbmap(hp, lbn, &bn, &runl);
390 if (error)
391 return (error);
392
393 towrite = szmin(off + uio->uio_resid,
394 min(64*1024, (runl+1)*DEV_BSIZE));
395 xfersz = roundup2(towrite, DEV_BSIZE);
396 dprintf(("hpfs_write: bn: 0x%x (0x%x) towrite: 0x%x (0x%x)\n",
397 bn, runl, towrite, xfersz));
398
399 /*
400 * We do not have to issue a read-before-write if the xfer
401 * size does not cover the whole block.
402 *
403 * In the UIO_NOCOPY case, however, we are not overwriting
404 * anything and must do a read-before-write to fill in
405 * any missing pieces.
406 */
407 if (off == 0 && towrite == xfersz &&
408 uio->uio_segflg != UIO_NOCOPY) {
409 bp = getblk(hp->h_devvp, dbtodoff(bn), xfersz, 0, 0);
410 clrbuf(bp);
411 } else {
412 error = bread(hp->h_devvp, dbtodoff(bn), xfersz, &bp);
413 if (error) {
414 brelse(bp);
415 return (error);
416 }
417 }
418
419 error = uiomove(bp->b_data + off, (size_t)(towrite - off), uio);
420 if(error) {
421 brelse(bp);
422 return (error);
423 }
424
425 if (ap->a_ioflag & IO_SYNC)
426 bwrite(bp);
427 else
428 bawrite(bp);
429 }
430
431 dprintf(("hpfs_write: successful\n"));
432 return (0);
433 }
434
435 /*
436 * XXXXX do we need hpfsnode locking inside?
437 *
438 * hpfs_getattr(struct vnode *a_vp, struct vattr *a_vap)
439 */
440 static int
441 hpfs_getattr(struct vop_getattr_args *ap)
442 {
443 struct vnode *vp = ap->a_vp;
444 struct hpfsnode *hp = VTOHP(vp);
445 struct vattr *vap = ap->a_vap;
446 int error;
447
448 dprintf(("hpfs_getattr(0x%x):\n", hp->h_no));
449
450 #if defined(__DragonFly__)
451 vap->va_fsid = dev2udev(hp->h_dev);
452 #else /* defined(__NetBSD__) */
453 vap->va_fsid = ip->i_dev;
454 #endif
455 vap->va_fileid = hp->h_no;
456 vap->va_mode = hp->h_mode;
457 vap->va_nlink = 1;
458 vap->va_uid = hp->h_uid;
459 vap->va_gid = hp->h_gid;
460 vap->va_rmajor = VNOVAL;
461 vap->va_rminor = VNOVAL;
462 vap->va_size = hp->h_fn.fn_size;
463 vap->va_bytes = roundup2(hp->h_fn.fn_size, DEV_BSIZE) + DEV_BSIZE;
464
465 if (!(hp->h_flag & H_PARVALID)) {
466 error = hpfs_validateparent(hp);
467 if (error)
468 return (error);
469 }
470 vap->va_atime = hpfstimetounix(hp->h_atime);
471 vap->va_mtime = hpfstimetounix(hp->h_mtime);
472 vap->va_ctime = hpfstimetounix(hp->h_ctime);
473
474 vap->va_flags = 0;
475 vap->va_gen = 0;
476 vap->va_blocksize = DEV_BSIZE;
477 vap->va_type = vp->v_type;
478 vap->va_filerev = 0;
479
480 return (0);
481 }
482
483 /*
484 * XXXXX do we need hpfsnode locking inside?
485 *
486 * hpfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
487 */
488 static int
489 hpfs_setattr(struct vop_setattr_args *ap)
490 {
491 struct vnode *vp = ap->a_vp;
492 struct hpfsnode *hp = VTOHP(vp);
493 struct vattr *vap = ap->a_vap;
494 struct ucred *cred = ap->a_cred;
495 int error;
496
497 dprintf(("hpfs_setattr(0x%x):\n", hp->h_no));
498
499 /*
500 * Check for unsettable attributes.
501 */
502 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
503 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
504 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
505 (vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
506 dprintf(("hpfs_setattr: changing nonsettable attr\n"));
507 return (EINVAL);
508 }
509
510 /* Can't change flags XXX Could be implemented */
511 if (vap->va_flags != VNOVAL) {
512 kprintf("hpfs_setattr: FLAGS CANNOT BE SET\n");
513 return (EINVAL);
514 }
515
516 /* Can't change uid/gid XXX Could be implemented */
517 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
518 kprintf("hpfs_setattr: UID/GID CANNOT BE SET\n");
519 return (EINVAL);
520 }
521
522 /* Can't change mode XXX Could be implemented */
523 if (vap->va_mode != (mode_t)VNOVAL) {
524 kprintf("hpfs_setattr: MODE CANNOT BE SET\n");
525 return (EINVAL);
526 }
527
528 /* Update times */
529 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
530 if (vp->v_mount->mnt_flag & MNT_RDONLY)
531 return (EROFS);
532 if (cred->cr_uid != hp->h_uid &&
533 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
534 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
535 (error = VOP_EACCESS(vp, VWRITE, cred))))
536 return (error);
537 if (vap->va_atime.tv_sec != VNOVAL)
538 hp->h_atime = vap->va_atime.tv_sec;
539 if (vap->va_mtime.tv_sec != VNOVAL)
540 hp->h_mtime = vap->va_mtime.tv_sec;
541
542 hp->h_flag |= H_PARCHANGE;
543 }
544
545 if (vap->va_size != VNOVAL) {
546 switch (vp->v_type) {
547 case VDIR:
548 return (EISDIR);
549 case VREG:
550 if (vp->v_mount->mnt_flag & MNT_RDONLY)
551 return (EROFS);
552 break;
553 default:
554 kprintf("hpfs_setattr: WRONG v_type\n");
555 return (EINVAL);
556 }
557
558 if (vap->va_size < hp->h_fn.fn_size) {
559 #if defined(__DragonFly__)
560 error = vtruncbuf(vp, vap->va_size, DEV_BSIZE);
561 if (error)
562 return (error);
563 #else /* defined(__NetBSD__) */
564 #error Need alternation for vtruncbuf()
565 #endif
566 error = hpfs_truncate(hp, vap->va_size);
567 if (error)
568 return (error);
569
570 } else if (vap->va_size > hp->h_fn.fn_size) {
571 #if defined(__DragonFly__)
572 vnode_pager_setsize(vp, vap->va_size);
573 #endif
574 error = hpfs_extend(hp, vap->va_size);
575 if (error)
576 return (error);
577 }
578 }
579
580 return (0);
581 }
582
583 /*
584 * Last reference to an node. If necessary, write or delete it.
585 *
586 * hpfs_inactive(struct vnode *a_vp)
587 */
588 int
589 hpfs_inactive(struct vop_inactive_args *ap)
590 {
591 struct vnode *vp = ap->a_vp;
592 struct hpfsnode *hp = VTOHP(vp);
593 int error;
594
595 dprintf(("hpfs_inactive(0x%x): \n", hp->h_no));
596
597 if (hp->h_flag & H_CHANGE) {
598 dprintf(("hpfs_inactive: node changed, update\n"));
599 error = hpfs_update (hp);
600 if (error)
601 return (error);
602 }
603
604 if (hp->h_flag & H_PARCHANGE) {
605 dprintf(("hpfs_inactive: parent node changed, update\n"));
606 error = hpfs_updateparent (hp);
607 if (error)
608 return (error);
609 }
610
611 if (prtactive && VREFCNT(vp) > 1)
612 vprint("hpfs_inactive: pushing active", vp);
613
614 if (hp->h_flag & H_INVAL) {
615 #if defined(__DragonFly__)
616 vrecycle(vp);
617 #else /* defined(__NetBSD__) */
618 vgone(vp);
619 #endif
620 return (0);
621 }
622 return (0);
623 }
624
625 /*
626 * Reclaim an inode so that it can be used for other purposes.
627 *
628 * hpfs_reclaim(struct vnode *a_vp)
629 */
630 int
631 hpfs_reclaim(struct vop_reclaim_args *ap)
632 {
633 struct vnode *vp = ap->a_vp;
634 struct hpfsnode *hp = VTOHP(vp);
635
636 dprintf(("hpfs_reclaim(0x%x0): \n", hp->h_no));
637
638 hpfs_hphashrem(hp);
639
640 /* Purge old data structures associated with the inode. */
641 if (hp->h_devvp) {
642 vrele(hp->h_devvp);
643 hp->h_devvp = NULL;
644 }
645
646 vp->v_data = NULL;
647
648 kfree(hp, M_HPFSNO);
649
650 return (0);
651 }
652
653 /*
654 * hpfs_print(struct vnode *a_vp)
655 */
656 static int
657 hpfs_print(struct vop_print_args *ap)
658 {
659 struct vnode *vp = ap->a_vp;
660 struct hpfsnode *hp = VTOHP(vp);
661
662 kprintf("tag VT_HPFS, ino 0x%x",hp->h_no);
663 lockmgr_printinfo(&vp->v_lock);
664 kprintf("\n");
665 return (0);
666 }
667
668 /*
669 * Calculate the logical to physical mapping if not done already,
670 * then call the device strategy routine.
671 *
672 * In order to be able to swap to a file, the VOP_BMAP operation may not
673 * deadlock on memory. See hpfs_bmap() for details. XXXXXXX (not impl)
674 *
675 * hpfs_strategy(struct vnode *a_vp, struct bio *a_bio)
676 */
677 int
678 hpfs_strategy(struct vop_strategy_args *ap)
679 {
680 struct bio *bio = ap->a_bio;
681 struct bio *nbio;
682 struct buf *bp = bio->bio_buf;
683 struct vnode *vp = ap->a_vp;
684 struct hpfsnode *hp;
685 int error;
686
687 dprintf(("hpfs_strategy(): \n"));
688
689 if (vp->v_type == VBLK || vp->v_type == VCHR)
690 panic("hpfs_strategy: spec");
691
692 nbio = push_bio(bio);
693 if (nbio->bio_offset == NOOFFSET) {
694 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
695 NULL, NULL, bp->b_cmd);
696 if (error) {
697 kprintf("hpfs_strategy: VOP_BMAP FAILED %d\n", error);
698 bp->b_error = error;
699 bp->b_flags |= B_ERROR;
700 /* I/O was never started on nbio, must biodone(bio) */
701 biodone(bio);
702 return (error);
703 }
704 if (nbio->bio_offset == NOOFFSET)
705 vfs_bio_clrbuf(bp);
706 }
707 if (nbio->bio_offset == NOOFFSET) {
708 /* I/O was never started on nbio, must biodone(bio) */
709 biodone(bio);
710 return (0);
711 }
712 hp = VTOHP(ap->a_vp);
713 vn_strategy(hp->h_devvp, nbio);
714 return (0);
715 }
716
717 /*
718 * XXXXX do we need hpfsnode locking inside?
719 *
720 * hpfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
721 */
722 int
723 hpfs_access(struct vop_access_args *ap)
724 {
725 struct vnode *vp = ap->a_vp;
726 struct hpfsnode *hp = VTOHP(vp);
727
728 dprintf(("hpfs_access(0x%x):\n", hp->h_no));
729 return (vop_helper_access(ap, hp->h_uid, hp->h_gid, hp->h_mode, 0));
730 }
731
732 static int
733 hpfs_de_uiomove(int *error, struct hpfsmount *hpmp, struct hpfsdirent *dep,
734 struct uio *uio)
735 {
736 char convname[HPFS_MAXFILENAME + 1];
737 int i, success;
738
739 dprintf(("[no: 0x%x, size: %d, name: %2d:%.*s, flag: 0x%x] ",
740 dep->de_fnode, dep->de_size, dep->de_namelen,
741 dep->de_namelen, dep->de_name, dep->de_flag));
742
743 /*strncpy(cde.d_name, dep->de_name, dep->de_namelen);*/
744 for (i=0; i<dep->de_namelen; i++)
745 convname[i] = hpfs_d2u(hpmp, dep->de_name[i]);
746 convname[dep->de_namelen] = '\0';
747
748 success = vop_write_dirent(error, uio, dep->de_fnode,
749 (dep->de_flag & DE_DIR) ? DT_DIR : DT_REG,
750 dep->de_namelen, convname);
751
752 dprintf(("[0x%zx] ", uio->uio_resid));
753 return (success);
754 }
755
756
757 /*
758 * hpfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
759 * int *a_ncookies, off_t **cookies)
760 */
761 int
762 hpfs_readdir(struct vop_readdir_args *ap)
763 {
764 struct vnode *vp = ap->a_vp;
765 struct hpfsnode *hp = VTOHP(vp);
766 struct hpfsmount *hpmp = hp->h_hpmp;
767 struct uio *uio = ap->a_uio;
768 int ncookies = 0, i, num, cnum;
769 int error = 0;
770 struct buf *bp;
771 struct dirblk *dp;
772 struct hpfsdirent *dep;
773 lsn_t olsn;
774 lsn_t lsn;
775 int level;
776
777 dprintf(("hpfs_readdir(0x%x, 0x%x, 0x%zx): ",
778 hp->h_no, (u_int32_t)uio->uio_offset, uio->uio_resid));
779
780 /*
781 * As we need to fake up . and .., and the remaining directory structure
782 * can't be expressed in one off_t as well, we just increment uio_offset
783 * by 1 for each entry.
784 *
785 * num is the entry we need to start reporting
786 * cnum is the current entry
787 */
788 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX)
789 return(EINVAL);
790 error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_FAILRECLAIM);
791 if (error)
792 return (error);
793
794 num = uio->uio_offset;
795 cnum = 0;
796
797 if( num <= cnum ) {
798 dprintf((". faked, "));
799 if (vop_write_dirent(&error, uio, hp->h_no, DT_DIR, 1, "."))
800 goto done;
801 if (error)
802 goto done;
803 ncookies ++;
804 }
805 cnum++;
806
807 if( num <= cnum ) {
808 dprintf((".. faked, "));
809 if (vop_write_dirent(&error, uio, hp->h_fn.fn_parent, DT_DIR, 2, ".."))
810 goto readdone;
811 if (error)
812 goto done;
813 ncookies ++;
814 }
815 cnum++;
816
817 lsn = ((alleaf_t *)hp->h_fn.fn_abd)->al_lsn;
818
819 olsn = 0;
820 level = 1;
821
822 dive:
823 dprintf(("[dive 0x%x] ", lsn));
824 error = bread(hp->h_devvp, dbtodoff(lsn), D_BSIZE, &bp);
825 if (error) {
826 brelse(bp);
827 goto done;
828 }
829
830 dp = (struct dirblk *) bp->b_data;
831 if (dp->d_magic != D_MAGIC) {
832 kprintf("hpfs_readdir: MAGIC DOESN'T MATCH\n");
833 brelse(bp);
834 error = EINVAL;
835 goto done;
836 }
837
838 dep = D_DIRENT(dp);
839
840 if (olsn) {
841 dprintf(("[restore 0x%x] ", olsn));
842
843 while(!(dep->de_flag & DE_END) ) {
844 if((dep->de_flag & DE_DOWN) &&
845 (olsn == DE_DOWNLSN(dep)))
846 break;
847 dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen);
848 }
849
850 if((dep->de_flag & DE_DOWN) && (olsn == DE_DOWNLSN(dep))) {
851 if (dep->de_flag & DE_END)
852 goto blockdone;
853
854 if (!(dep->de_flag & DE_SPECIAL)) {
855 if (num <= cnum) {
856 if (hpfs_de_uiomove(&error, hpmp, dep, uio)) {
857 brelse(bp);
858 dprintf(("[resid] "));
859 goto readdone;
860 }
861 if (error) {
862 brelse (bp);
863 goto done;
864 }
865 ncookies++;
866 }
867 cnum++;
868 }
869
870 dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen);
871 } else {
872 kprintf("hpfs_readdir: ERROR! oLSN not found\n");
873 brelse(bp);
874 error = EINVAL;
875 goto done;
876 }
877 }
878
879 olsn = 0;
880
881 while(!(dep->de_flag & DE_END)) {
882 if(dep->de_flag & DE_DOWN) {
883 lsn = DE_DOWNLSN(dep);
884 brelse(bp);
885 level++;
886 goto dive;
887 }
888
889 if (!(dep->de_flag & DE_SPECIAL)) {
890 if (num <= cnum) {
891 if (hpfs_de_uiomove(&error, hpmp, dep, uio)) {
892 brelse(bp);
893 dprintf(("[resid] "));
894 goto readdone;
895 }
896 if (error) {
897 brelse (bp);
898 goto done;
899 }
900 ncookies++;
901 }
902 cnum++;
903 }
904
905 dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen);
906 }
907
908 if(dep->de_flag & DE_DOWN) {
909 dprintf(("[enddive] "));
910 lsn = DE_DOWNLSN(dep);
911 brelse(bp);
912 level++;
913 goto dive;
914 }
915
916 blockdone:
917 dprintf(("[EOB] "));
918 olsn = lsn;
919 lsn = dp->d_parent;
920 brelse(bp);
921 level--;
922
923 dprintf(("[level %d] ", level));
924
925 if (level > 0)
926 goto dive; /* undive really */
927
928 if (ap->a_eofflag) {
929 dprintf(("[EOF] "));
930 *ap->a_eofflag = 1;
931 }
932
933 readdone:
934 uio->uio_offset = cnum;
935 dprintf(("[readdone]\n"));
936 if (!error && ap->a_ncookies != NULL) {
937 off_t *cookies;
938 off_t *cookiep;
939
940 dprintf(("%d cookies, ",ncookies));
941 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
942 panic("hpfs_readdir: unexpected uio from NFS server");
943 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
944 for (cookiep = cookies, i=0; i < ncookies; i++)
945 *cookiep++ = ++num;
946
947 *ap->a_ncookies = ncookies;
948 *ap->a_cookies = cookies;
949 }
950
951 done:
952 vn_unlock(ap->a_vp);
953 return (error);
954 }
955
956 /*
957 * hpfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
958 * struct componentname *a_cnp)
959 */
960 int
961 hpfs_lookup(struct vop_old_lookup_args *ap)
962 {
963 struct vnode *dvp = ap->a_dvp;
964 struct hpfsnode *dhp = VTOHP(dvp);
965 struct hpfsmount *hpmp = dhp->h_hpmp;
966 struct componentname *cnp = ap->a_cnp;
967 struct ucred *cred = cnp->cn_cred;
968 struct vnode **vpp = ap->a_vpp;
969 int error;
970 int nameiop = cnp->cn_nameiop;
971 int flags = cnp->cn_flags;
972 int lockparent = flags & CNP_LOCKPARENT;
973 #ifdef HPFS_DEBUG
974 int wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
975 #endif
976 *vpp = NULL;
977 dprintf(("hpfs_lookup(0x%x, %s, %ld, %d, %d): \n",
978 dhp->h_no, cnp->cn_nameptr, cnp->cn_namelen,
979 lockparent, wantparent));
980
981 if (nameiop != NAMEI_CREATE && nameiop != NAMEI_DELETE && nameiop != NAMEI_LOOKUP) {
982 kprintf("hpfs_lookup: LOOKUP, DELETE and CREATE are only supported\n");
983 return (EOPNOTSUPP);
984 }
985
986 error = VOP_EACCESS(dvp, VEXEC, cred);
987 if(error)
988 return (error);
989
990 if( (cnp->cn_namelen == 1) &&
991 !strncmp(cnp->cn_nameptr,".",1) ) {
992 dprintf(("hpfs_lookup(0x%x,...): . faked\n",dhp->h_no));
993
994 vref(dvp);
995 *vpp = dvp;
996
997 return (0);
998 } else if( (cnp->cn_namelen == 2) &&
999 !strncmp(cnp->cn_nameptr,"..",2) && (flags & CNP_ISDOTDOT) ) {
1000 dprintf(("hpfs_lookup(0x%x,...): .. faked (0x%x)\n",
1001 dhp->h_no, dhp->h_fn.fn_parent));
1002
1003 VOP__UNLOCK(dvp, 0);
1004
1005 error = VFS_VGET(hpmp->hpm_mp, NULL,
1006 dhp->h_fn.fn_parent, vpp);
1007 if (error) {
1008 VOP__LOCK(dvp, 0);
1009 return(error);
1010 }
1011
1012 if (lockparent && (error = VOP__LOCK(dvp, 0))) {
1013 vput(*vpp);
1014 return (error);
1015 }
1016 return (error);
1017 } else {
1018 struct buf *bp;
1019 struct hpfsdirent *dep;
1020 struct hpfsnode *hp;
1021
1022 error = hpfs_genlookupbyname(dhp,
1023 cnp->cn_nameptr, cnp->cn_namelen, &bp, &dep);
1024 if (error) {
1025 if (error == ENOENT &&
1026 (nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME)) {
1027 if(!lockparent) {
1028 cnp->cn_flags |= CNP_PDIRUNLOCK;
1029 VOP__UNLOCK(dvp, 0);
1030 }
1031 return (EJUSTRETURN);
1032 }
1033
1034 return (error);
1035 }
1036
1037 dprintf(("hpfs_lookup: fnode: 0x%x, CPID: 0x%x\n",
1038 dep->de_fnode, dep->de_cpid));
1039
1040 if (nameiop == NAMEI_DELETE) {
1041 error = VOP_EACCESS(dvp, VWRITE, cred);
1042 if (error) {
1043 brelse(bp);
1044 return (error);
1045 }
1046 }
1047
1048 if (dhp->h_no == dep->de_fnode) {
1049 brelse(bp);
1050 vref(dvp);
1051 *vpp = dvp;
1052 return (0);
1053 }
1054
1055 error = VFS_VGET(hpmp->hpm_mp, NULL, dep->de_fnode, vpp);
1056 if (error) {
1057 kprintf("hpfs_lookup: VFS_VGET FAILED %d\n", error);
1058 brelse(bp);
1059 return(error);
1060 }
1061
1062 hp = VTOHP(*vpp);
1063
1064 hp->h_mtime = dep->de_mtime;
1065 hp->h_ctime = dep->de_ctime;
1066 hp->h_atime = dep->de_atime;
1067 bcopy(dep->de_name, hp->h_name, dep->de_namelen);
1068 hp->h_name[dep->de_namelen] = '\0';
1069 hp->h_namelen = dep->de_namelen;
1070 hp->h_flag |= H_PARVALID;
1071
1072 brelse(bp);
1073
1074 if(!lockparent) {
1075 cnp->cn_flags |= CNP_PDIRUNLOCK;
1076 VOP__UNLOCK(dvp, 0);
1077 }
1078 }
1079 return (error);
1080 }
1081
1082 /*
1083 * hpfs_remove(struct vnode *a_dvp, struct vnode *a_vp,
1084 * struct componentname *a_cnp)
1085 */
1086 int
1087 hpfs_remove(struct vop_old_remove_args *ap)
1088 {
1089 int error;
1090
1091 dprintf(("hpfs_remove(0x%x, %s, %ld): \n", VTOHP(ap->a_vp)->h_no,
1092 ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen));
1093
1094 if (ap->a_vp->v_type == VDIR)
1095 return (EPERM);
1096
1097 error = hpfs_removefnode (ap->a_dvp, ap->a_vp, ap->a_cnp);
1098 return (error);
1099 }
1100
1101 /*
1102 * hpfs_create(struct vnode *a_dvp, struct vnode **a_vpp,
1103 * struct componentname *a_cnp, struct vattr *a_vap)
1104 */
1105 int
1106 hpfs_create(struct vop_old_create_args *ap)
1107 {
1108 int error;
1109
1110 dprintf(("hpfs_create(0x%x, %s, %ld): \n", VTOHP(ap->a_dvp)->h_no,
1111 ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen));
1112
1113 error = hpfs_makefnode (ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap);
1114
1115 return (error);
1116 }
1117
1118 /*
1119 * Return POSIX pathconf information applicable to NTFS filesystem
1120 *
1121 * hpfs_pathconf(struct vnode *a_vp, int a_name, t *a_retval)
1122 */
1123 int
1124 hpfs_pathconf(struct vop_pathconf_args *ap)
1125 {
1126 switch (ap->a_name) {
1127 case _PC_LINK_MAX:
1128 *ap->a_retval = 1;
1129 return (0);
1130 case _PC_NAME_MAX:
1131 *ap->a_retval = HPFS_MAXFILENAME;
1132 return (0);
1133 case _PC_PATH_MAX:
1134 *ap->a_retval = PATH_MAX;
1135 return (0);
1136 case _PC_CHOWN_RESTRICTED:
1137 *ap->a_retval = 1;
1138 return (0);
1139 case _PC_NO_TRUNC:
1140 *ap->a_retval = 0;
1141 return (0);
1142 #if defined(__NetBSD__)
1143 case _PC_SYNC_IO:
1144 *ap->a_retval = 1;
1145 return (0);
1146 case _PC_FILESIZEBITS:
1147 *ap->a_retval = 32;
1148 return (0);
1149 #endif
1150 default:
1151 return (EINVAL);
1152 }
1153 /* NOTREACHED */
1154 }
1155
1156
1157 /*
1158 * Global vfs data structures
1159 */
1160
1161 struct vop_ops hpfs_vnode_vops = {
1162 .vop_default = vop_defaultop,
1163 .vop_getattr = hpfs_getattr,
1164 .vop_setattr = hpfs_setattr,
1165 .vop_inactive = hpfs_inactive,
1166 .vop_reclaim = hpfs_reclaim,
1167 .vop_print = hpfs_print,
1168 .vop_old_create = hpfs_create,
1169 .vop_old_remove = hpfs_remove,
1170 .vop_old_lookup = hpfs_lookup,
1171 .vop_access = hpfs_access,
1172 .vop_readdir = hpfs_readdir,
1173 .vop_fsync = hpfs_fsync,
1174 .vop_bmap = hpfs_bmap,
1175 .vop_getpages = vop_stdgetpages,
1176 .vop_putpages = vop_stdputpages,
1177 .vop_strategy = hpfs_strategy,
1178 .vop_read = hpfs_read,
1179 .vop_write = hpfs_write,
1180 .vop_ioctl = hpfs_ioctl,
1181 .vop_pathconf = hpfs_pathconf
1182 };
1183
DragonFly BSD